git
https://github.com/sea-boat/mysql-protocol
概況
mysql客戶端可以用process kill命令讓服務(wù)端終止某個連接，正常會返回ok包。
mysql通信報文結(jié)構(gòu)
| 類型 | 名字 | 描述 |
|---|---|---|
| int | payload長度 | 按照the least significant byte first存儲，3個字節(jié)的payload和1個字節(jié)的序列號組合成報文頭 |
| int | 序列號 | |
| string | payload | 報文體，長度即為前面指定的payload長度 |
process kill命令包
Payload
1??????????????[0c]?COM_PROCCESS_KILL4??????????????connection?id
更多詳情 ：?http://dev.mysql.com/doc/internals/en/com-process-kill.html
process kill命令包類
/** ?*? ?*?<pre class="brush:php;toolbar:false"><b>mysql process kill packet.</b>
?*?@author? ?*?
seaboat
?*?
<b>email: </b>849586227@qq.com
?*?
<b>blog: </b>http://www.php.cn/;/pre> * @version 1.0 * @see http://www.php.cn/ */public class ProcessKillPacket extends MySQLPacket { public byte flag = (byte) 0xfe; public int connectionId; @Override public void read(byte[] data) { MySQLMessage mm = new MySQLMessage(data); packetLength = mm.readUB3(); packetId = mm.read(); flag = mm.read(); connectionId = mm.readInt(); } @Override public void write(ByteBuffer buffer) { int size = calcPacketSize(); BufferUtil.writeUB3(buffer, size); buffer.put(packetId); buffer.put(COM_PROCESS_KILL); BufferUtil.writeInt(buffer, connectionId); } @Override public int calcPacketSize() { return 5; } @Override protected String getPacketInfo() { return "MySQL Process Kill Packet"; } }
?以上就是mysql 協(xié)議的process kill包及解析的內(nèi)容，更多相關(guān)內(nèi)容請關(guān)注PHP中文網(wǎng)（www.php.cn）！
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